Way too harsh there.
What if someone wants to be a cripple? Wouldn’t healing them ruin their self esteem?
Your earlier comment was not "what if someone wants to role-play a cripple?" If it was meant to mean that, I don't understand the relevance of healing hurting their self esteem. Whose self-esteem? The player's, or the character's?
The response made sense by querying why would a character want to be crippled, not why a player would find it interesting to do so.